OYSTERS and pearls are highly prized by gourmands and the wealthy alike but finding one inside the mollusc is a rarity. While it’s well-known oysters are needed to make pearls we look at why they are ...

AS it is revealed a clueless fisherman kept a gigantic pearl, worth an estimated £76million, in a wooden shack for a decade we ask how are the gems formed. The average pearl is about seven millimetres ...